US2907347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control units for pressure-actuated devices
Assignee: Delaware Capital Formation Inc
•
Filing: 1958-10-08
•
Granted: 1959-10-06
•
Expires: 1978-10-08
Abstract
No abstract record available.
Inventors
- 👤 Asbury S Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:17
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/126; F16K11/00; F16K11/02; F16K11/04; F16K11/048; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7791
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US172492A
Cited
US2339487A
Cited
US1373599A
Cited
US1583642A
Cited
US1652710A
Cited
US1779319A
Cited
US2097201A
Cited
US2587357A
Cited
US2858840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |